从R中的军官包自定义ph_with函数中的文本

Question

我正在尝试使用高级程序包自动化我的PowerPoint报告；但是，我无法了解如何定制文本(字体大小、颜色、字体)。

为了添加文本，我使用了ph_with()函数。我试着使用军官的ftext()函数定制它，但是它不起作用。用这个例子

library(officer)

dataframe <- data.frame(column="Sample")
ppt_temp <- read_pptx()
ppt_temp <- add_slide(ppt_temp)

properties <- fp_text(color = "red", font.size = 28, bold = TRUE)

slide_title <- ftext(paste0("These data cover ", dataframe$column[1]), properties)

slide <- ph_with(x = ppt_temp, value = slide_title, 
   location = ph_location_type(type = "title"))

我得到以下错误

Error in UseMethod("ph_with", value) :
  no applicable method for "ph_with" applied to an object of class "c('ftext', 'cot', 'run')"

如果我不尝试设置文本属性，这将有效

slide <- ph_with(x = ppt_temp, value = paste0("These data cover ", dataframe$column[1]), 
    location = ph_location_type(type = "title))

有什么建议吗？

Answer 1

ph_with似乎希望这个值在段落包装器中。将文本对象包装在fpar()中。试一试

slide <- ph_with(x = ppt_temp, value = fpar(slide_title), 
    location = ph_location_type(type = "title"))

因此，一个充分发挥作用的例子是

library(officer)

dataframe <- data.frame(column="Sample")
ppt_temp <- read_pptx()
ppt_temp <- add_slide(ppt_temp)

properties <- fp_text(color = "red", font.size = 28, bold = TRUE)
slide_title <- ftext(paste0("These data cover ", dataframe$column[1]), properties)
slide <- ph_with(x = ppt_temp, value = fpar(slide_title),
                 location = ph_location_type(type = "title"))

print(ppt_temp, target="temp.pptx")